EP0736885A2 - Matériau pour contacts électriques en argent avec du carbone - Google Patents

Matériau pour contacts électriques en argent avec du carbone Download PDF

Info

Publication number
EP0736885A2
EP0736885A2 EP96100479A EP96100479A EP0736885A2 EP 0736885 A2 EP0736885 A2 EP 0736885A2 EP 96100479 A EP96100479 A EP 96100479A EP 96100479 A EP96100479 A EP 96100479A EP 0736885 A2 EP0736885 A2 EP 0736885A2
Authority
EP
European Patent Office
Prior art keywords
carbon
silver
carbon black
graphite
powder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96100479A
Other languages
German (de)
English (en)
Other versions
EP0736885B1 (fr
EP0736885A3 (fr
Inventor
Wolfgang Dr. Weise
Roger Wolmer
Peter Dr. Braumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Umicore AG and Co KG
Original Assignee
Degussa GmbH
Degussa Huels AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Degussa GmbH, Degussa Huels AG filed Critical Degussa GmbH
Publication of EP0736885A2 publication Critical patent/EP0736885A2/fr
Publication of EP0736885A3 publication Critical patent/EP0736885A3/fr
Application granted granted Critical
Publication of EP0736885B1 publication Critical patent/EP0736885B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/027—Composite material containing carbon particles or fibres
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0466—Alloys based on noble metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/06—Alloys based on silver
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/048—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by powder-metallurgical processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/036—Application nanoparticles, e.g. nanotubes, integrated in switch components, e.g. contacts, the switch itself being clearly of a different scale, e.g. greater than nanoscale

Definitions

  • the invention relates to a material for electrical contacts, consisting of silver, a silver alloy or a silver composite material with 0.05 to 7 wt.% Carbon.
  • PCT application 92/18995 describes a silver-carbon composite material for electrical contacts which, in addition to graphite powder, also contains carbon fibers, the length of the carbon fibers having to be more than twice as long as the diameter of the graphite particles, which have an average particle diameter should have from 0.2 to 40 ⁇ m. It is mentioned that carbon black can also be used as powdered carbon. However, a material in which both the carbon powder and the carbon fibers consist of graphite should behave most favorably.
  • US Pat. No. 2,319,240 describes a silver-carbon material for electrical contacts in which other carbon besides graphite can also be used. No information is given about the type of carbon and the size of these carbon particles. These materials are manufactured by mixing appropriate powders, pressing the powder into a semi-finished product and sintering.
  • Carbon blacks with primary particle sizes below 25 nm or between 10 and 100 nm are known from DE-PS 23 57 524 and from the document " Electrically conductive plastics", Carl Hauser Verlag, Kunststoff, 1986, pages 55-61.
  • This object is achieved in that the carbon is added to the silver, silver alloy or silver composite material powder exclusively in the form of carbon black with an average primary particle size of less than 150 nanometers and the mixture is cold isostatically pressed and sintered.
  • the average primary particle size of the carbon black used is preferably less than 100 nanometers.
  • these materials show an improved erosion resistance compared to the known silver-carbon contact materials with excellent welding security.
  • Another advantage of the material is that it has a reduced carbon content has better values than silver graphite and therefore leaves less conductive residues when switching.
  • the combustion behavior of AgNi and AgCu0 composites can also be improved by adding carbon black.
  • the contact pieces produced according to Examples 1 to 3 were compared in a model test stand at 100 A in their burn-off behavior and at 1000 A in their welding power with silver graphite active substances of the same composition, which contained graphite powder or graphite powder or graphite fibers instead of carbon black.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Contacts (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Switches (AREA)
EP96100479A 1995-02-01 1996-01-15 Matériau pour contacts électriques en argent avec du carbone Expired - Lifetime EP0736885B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19503184A DE19503184C1 (de) 1995-02-01 1995-02-01 Werkstoff für elektrische Kontakte aus Silber-Kohlenstoff
DE19503184 1995-02-01

Publications (3)

Publication Number Publication Date
EP0736885A2 true EP0736885A2 (fr) 1996-10-09
EP0736885A3 EP0736885A3 (fr) 1997-10-29
EP0736885B1 EP0736885B1 (fr) 2001-10-17

Family

ID=7752865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96100479A Expired - Lifetime EP0736885B1 (fr) 1995-02-01 1996-01-15 Matériau pour contacts électriques en argent avec du carbone

Country Status (6)

Country Link
EP (1) EP0736885B1 (fr)
JP (1) JPH08239724A (fr)
AT (1) ATE207236T1 (fr)
DE (2) DE19503184C1 (fr)
ES (1) ES2165931T3 (fr)
ZA (1) ZA96751B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228904B1 (en) * 1996-09-03 2001-05-08 Nanomaterials Research Corporation Nanostructured fillers and carriers
DE102010014745A1 (de) 2010-01-15 2011-07-21 Tyco Electronics AMP GmbH, 64625 Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements
US9620258B2 (en) 2012-03-30 2017-04-11 Schneider Electric Industries Sas Silver-based electrical contact material
CN119979943A (zh) * 2025-02-17 2025-05-13 温州宏丰电工合金股份有限公司 一种AgCNi电接触材料及制备方法和电触头

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6933331B2 (en) 1998-05-22 2005-08-23 Nanoproducts Corporation Nanotechnology for drug delivery, contrast agents and biomedical implants
US7708974B2 (en) 2002-12-10 2010-05-04 Ppg Industries Ohio, Inc. Tungsten comprising nanomaterials and related nanotechnology
DE10261303B3 (de) * 2002-12-27 2004-06-24 Wieland-Werke Ag Verbundmaterial zur Herstellung elektrischer Kontakte und Verfahren zu dessen Herstellung
WO2010109777A1 (fr) 2009-03-24 2010-09-30 株式会社アライドマテリアル Matériau pour contact électrique
DE102009018035A1 (de) * 2009-04-18 2010-10-28 Moeller Gmbh Kontaktanordnung für Schwachstromanwendungen
KR101789300B1 (ko) * 2016-09-28 2017-10-23 부경대학교 산학협력단 방전 플라즈마 소결 공정을 이용한 은-다이아몬드 복합 재료의 제조방법 및 이에 의해 제조된 은-다이아몬드 복합 재료

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1785618A (en) * 1920-04-09 1930-12-16 Gen Railway Signal Co Copper-carbon contact
US2319240A (en) * 1940-03-19 1943-05-18 Mallory & Co Inc P R Electric contact and the like
US2818633A (en) * 1955-03-02 1958-01-07 Gibson Electric Company Electrical contact
DE2357524C2 (de) * 1973-11-17 1982-04-29 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von Verstärker- und Farbrußen hoher Feinteiligkeit und niedriger Porosität
DE4111683A1 (de) * 1991-04-10 1992-10-22 Duerrwaechter E Dr Doduco Werkstoff fuer elektrische kontakte aus silber mit kohlenstoff

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228904B1 (en) * 1996-09-03 2001-05-08 Nanomaterials Research Corporation Nanostructured fillers and carriers
DE102010014745A1 (de) 2010-01-15 2011-07-21 Tyco Electronics AMP GmbH, 64625 Elektrisches Kontaktelement und Verfahren zur Herstellung eines elektrischen Kontaktelements
WO2011086167A1 (fr) 2010-01-15 2011-07-21 Umicore Ag & Co. Kg Élément de contact électrique et procédé de fabrication d'un élément de contact électrique
US8749330B2 (en) 2010-01-15 2014-06-10 Umicore Ag & Co. Kg Electric contact element and method for producing an electric contact element
US9620258B2 (en) 2012-03-30 2017-04-11 Schneider Electric Industries Sas Silver-based electrical contact material
CN119979943A (zh) * 2025-02-17 2025-05-13 温州宏丰电工合金股份有限公司 一种AgCNi电接触材料及制备方法和电触头

Also Published As

Publication number Publication date
EP0736885B1 (fr) 2001-10-17
DE19503184C1 (de) 1996-05-02
ZA96751B (en) 1996-08-29
ATE207236T1 (de) 2001-11-15
EP0736885A3 (fr) 1997-10-29
ES2165931T3 (es) 2002-04-01
JPH08239724A (ja) 1996-09-17
DE59607910D1 (de) 2001-11-22

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